If you haven't already heard about this conference, you should check it out fast. There's only room for 100 attendendees and some of the best know "agilist" in the .Net community will be there.
Here's part of the description from the website
"The ALT.NET Conference applies Open Space Technology to create a dialog between people who are trying to learn ALT.NET practices and people who are working toward communicating the practices"
It is going to be very interesting